Bias tubing



J i ,"1 ,1. KATZETAL 2,445,883

BIAS TUBING Filed Jan. 18, 1945 2 Sheets-Sheet 1 Julius KATZ FRANK I.MAU ROS INVENTOR5 M ATTORNEY.

July 27, i948. KATZ T A 2,445,883

BIAS TUBING File d Jan. 1a, 1945 I 2 Sheets-Sheet 2 INVENTORHSYTuhusKA-rz FRANK P MAzr'o-R'os W ATTORNEY.

Patented July 27, 1948 UNITED STATE v BIAS TUBING Julius Katz, Bronx,and Frank P. Majoros, Brooklyn, N. Y., assignors to SuperbaManufacturing00., Inc., New York, N. Y., a corporation of New York ApplicationJanuary 18, 1945, Serial No. 573,364

2 Claims. (01. 112-63) 'Eflhis invention relates to themethod of forming ,cloth intobias seamed tubing in which the bias seam does not runhelically throughout the len th of the tubing, but is disposeddiagonally of the cloth and is made up ofseparate spaced spi alc nv lutonsi i i i .Heiical y bia seamed tubing is being u a limited extent inthe bag industry, but the complicated method employed to produce theartic'le have considerably hindered wider use in this field, It is theobject of the presentinvention to provide a cloth tubing in which thethreads are diagonally placed with respect to each other and the; biascutting of the threads is controlled so that the angle or degree of biascut will predetermine the position, of the threads. Bias seam tubingpossesses a resiliency, as does all bias cut cloth materials, andaccording to the present invention the degree'..of resiliencyis'predetermined by the angle or degree that the threads are disposed.In using bias tubing for bagging purposes, it is necessary to controlthe stretch of the bag and the present method accurately exercises suchcontrol a i The present invention has the further advantage of producingtubular bagging material, of any, size, efficiently, quickly andinexpensively. This is accomplished by superposing strips upon eachother or by dividing the bias strip longitudinally into as many sectionsas desirable and then by seaming the divided sections .togetheralongtheir longitudinal sides so that a bag tubing is produced of the desireddiameter.

The objects of this invention are accomplished by means of the severalsteps in the method hereinafter described, set forth in the appendedclaims, and illustratively exemplified in the accompanying drawings, inwhich:

Figures 1 and 2 are elevational views showing the progress of a strip ofwoven cloth material, from a flat state into a tubing which is thenrotated spirally into the path of a blade and finally severed into abias strip;

Figure 3 illustrates the step of forming the bias strip into biastubing;

Figure 4 is a side view of the bias tubing showing the disposition ofthe spiral seam with respect to the longitudinal side seam;

Figure 5 is a substantially transverse sectional view of bias tubingtaken on lines 55 of Figure 3;

Figure 6 illustratively exemplifies the step of converting the biastubing into strip wherein the direction of the threads of the originalmaterial of Figure 1 are reversed to, produce a stripof cross cutmaterial; y i Figure '7 is an elevational view oiatubingmaterial ofknitted, woven or braided construction in which no seam is present andfrom which a bias strip is being cut in the manner of Figure 2 Figure 8is an elevational view of a bias strip of Figure 7 being formed into abiastubing by seaming together, the longitudinal side edges of the biasstrip, in the manner of Figure 1;

Figure 9 is an elevation-a1 view of a-tubing ma terial which s fo m dyusin tw Ir-mor ia strips of the material and attaching them ,togetheralong their longitudinal side edges to form a tubing of any diameterrequired forbagging,

FigurealO is aplan view of astrip ofbias material embodying attacheddiamond shaped bias pieces. i n

Referring to the drawings, and especially Figures 1 and 2,1 weillustrate a straight ,l-engthof cloth or similar material whichis,.folded longitudinally of itself-audits side edges stitchedtogether.to form atube, the tube being moved along in a spiral direction intothe 'path of a cutting element which severs the tube into a continuousbias strip. This is the well known method of pro,- ducing bi-asstripmaterial.

The nextmove in the, presentmethod, see Figures 3 to 5, involves thestepof tubing the bias material by'bringin-g together the longitudinalside edges of the strip and stitching or otherwise seaming them to forma .bias seamed tubing illustratively exemplified in Figures 3 and 4;Figure 4 being an elevational view of the tubing and illustrating thearrangement of longitudinal and interrupted spiral seams.Thelongitudinal stitch.- ing forming the seam intersects the crossedbias threads of the material forming an angle which is eithersubstantially less than or substantially greater than a right angle.

In the drawings, Ill denotes the straight cloth strip and l I the seamformed by joining together its opposite longitudinal side edges. Thetubing l2 thus formed is fed spirally over and along a mandrel l3 bymeans of feed rollers 14, the material being severed into a bias stripl5 by means of a cutting element l6 arranged on the mandrel in the pathof the spirally fed tubing. The bias the ends of each diagonal seambeing spaced from each other along the longitudinal seam and from theends of adjacent diagonal seams.

The bias seamed tubing is finally cut into desired lengths and the openends closed to \form bags.

It may become necessary to utilize the bias seamed tubing for otherpurposes, i. e., forproducing a strip of material in which the directionReferring now to Figure 9, we show at least two separate bias strips 15attached together along their longitudinal side edges by means of scams2*!) to form bias tubing 30. The purpose of this particular arrangementis to create tubular bagging of substantially any width or diameterdepending upon the widths'aoi the bias strips used in-the construction.While the bias strips illustrated are those produced by the method ofFigure 2, the strips may just a Well be those of the method of Figure 7.

Referring to Figure 10, the strip of bias material-comprises diamondshaped bias pieces 3| 10f; material attached together .by seams 32, the

tubing being formed by bringing tog-ether the longitudinal side edgesand seaming the same longitudinally.

of the thread-s have been reversed. In other words,

such so-c alled cross cut material is illustratively exemplified'inFigure 6, which shows the bias seamed tub-ing 20 being fed spirally overa mandrel 2| and into the path of a cutter 22, which is disposed at anangle to the longitudinal axis of the tubing and at an angle to thediagonal seams I8 and longitudinal seam l9. In this cross out the cutter22 severs the tubing along the threads which originally ran transverselyof the cloth so that the strip 23 thus produced would appearapproximately as shown in Figure 6.

In Figures? and 8, we have illustrated the steps required in the presentmethod of producing bias tubing from tubular knitted, woven or braidedmaterial, i. e;, straight seamless tubing designated 23; The first stepis to spirally rota-te the tubing 23' over amandrel 24 or other supportso as to enable the cutter 25 to sever the material into a continuousseamless bias strip 26. The final step is to form the bias strip 26 intoa bias tubing 21 bybringing together the longitudinal side edges of thebias strip and attaching the same by a row of stitching or other methodof forming a seam 28. The longitudinal stitching forming the seamintersects the crossed bias threads of the material forming an anglewhich is either substantially less than or substantially greater than 'aright angle. As a result of this method, we have a bagging materialwhich has 'only the longitudinal side seam 28 and which is provided withall of the desired resilienc of the bagging material of Figures 3 to 5.1

Having described the present invention and the manner in which theseveral steps are carried out, what is claimed is:

1. A method of manufacturing tubular bias bagging material from unbiasedtubular textile materi-al which comprises the steps of cutting saidtubular material along the convolutions of a con-' tinuous helical lineto obtain cut-edged bias material and thereafter joining the said biasmaterial adjacent the cut edges to form tubular bias bagging material;

2. A tubular bagging material co cloth seamed along the adjacentlongitudinal edges thereof to form a tube, the seaming inter secting thecrossed bias threads of the material and forming an angle thereto whichis either substan-tially less than or substantially greater than a rightangle. 1

JULIUS KATZ. V FRANK P. MAJoRos.

REFERENCES CITED The following references are of record in the file ofthis patent:

1 UNITED STATES PATENTS prising bias

